Carburetor



(No Model.) J. 0. SPRAGUE & J. W. GUTHRIE.

4 I GARBURETOR.

No. 527,085. Patented 001;. 9,1894.

UNITED STATES JAMES O. SPRAGUE AND JOHN W. GUTHRIE, OF SACRAMENTO,CALIFORNIA.

PAT NT T OFFICE.

CARBU RETO R.

SPECIFICATION forming part of Letters Patent No. 527,085, dated October9, 1894. Application filed February 12, 189A. Serial No. 499,946. (Nomodel.)

To all whom it may concern:

Be it known that we, JAMES OJSPRAGUE an JOHN W. GUTHRIE, citizens of theUnited States, residing at Sacramento, in the county of Sacramento andState of California, have invented certain new and useful Improve-Vments in Carburetors; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will onableothers skilled'in the art towhich it appertains to make and use thesame.

This invention relates to carburetors for gasoline engines, and has forits object to provide simple and eifective means for controlling theflow or feed of the carburetor in accordance with the movement of theengine, and also to otherwise facilitate the operation of such devices.

With these and other objects in view the invention consists of theconstruction and arrangement of theseveral parts, which will be morefully hereinafter described and claimed.

In the drawings: Figure 1 is a sectional elevation of an apparatusembodying the invention. Fig. 2 is a detail perspective view of a fenderused in connection with the apparatus. Figs. 3 and 4 are detail planviews of disks employed in connection with the carburetor.

Similar numerals of reference are employed to indicate correspondingparts in the several views.

Referring to the drawings, the numerals 1 and 2 designate two tanks, thetank 1 being a reservoir constructed of galvanized iron, and adapted tohold a supply of gasoline. The said reservoir is made air-tight, and hasa small air tube 3 extending thereinto from the'top to near the bottomthereof, the upper end of the said air tube being exterior of the tank.The tank 2 contains the carburetor 3 which is hopper shaped and attachedto the bottom of said tank 2, and the lower portion of one side thereofis connected with the bottom portion of the tank 1 by a small tube 4having therein a gage cock 5 to regulate the flow of the gasoline fromthe reservoir to the carburetor. On the opposite side of the lowerportion of the carburetor is a glass gage 6 which is intended to showthe height of the gasoline in saidcarburetor, and at the top of the tank2 is an outlet pipe 7 which is adapted the purposes which willbe'manifest.

to be connected with the engine. The tanks 1 and "2 are attached to eachother by braces 8 and 9 and said tanks are also supplied with screw caps10 and 11, as fully shown, and for Extending into one side of the lowerportion of the carburetor is a pipe 11 which runs from a heater 12having an upper plosed top and a lower perforated bottom, and consistsof a casing surrounding or covering a portion of the'exhaust pipe 13from the gas engine.

The air flows upward through the perforated bottom of the said heater,and becomes warm by surrounding the exhaust pipe and then passesout'through the tube 11 to the carburetor, being conveyed to a chamber14, located in the bottom portion of the carburetor and having a disk 14with peripheral perforations 15. Above the disk 14 is a second disk 15having central perforations 16, and above disk15 are other disks 17 and17 similar respectively to disksl i and 15". By this means the air ismore thoroughly forced through the oil and carburation established.Within the tank 2, above the oil level, preferably, is suspendedaninverted conical fender 15", which is secured to the sides of the tank 2by ears 16, it being seen that the upper edge of said fender stands awayfrom the adjacent portion of the inner surface of the tank 2 to permitthe gas to have unimpeded upward flow evenly and slowly into the tank 2.

In operation the gage cock is set according to the amount of gas used bythe engine and an automatic feed of fresh gasoline from the reservoir tothe carburetor is established as long as the engine is running.

automatically as the air tube entering the tank 1 only allows as muchair to enter the said tank as the amount of gasoline displaced.

level with the bottom of the air tube into the 'tank'l and as the enginedisplaces the gasin the top of the carburetor airis sucked through theair tube 11 into the distribute'r, and out again through the perforatedholes in the bulb or chamber to which the lower end of the air tube 11is attached,and thence through the gasoline, finally finding its way tothe upper part of the carburetor to take the place As soon as the enginestops, the flow of gasoline stops The gasoline stands in a carburetor upto about the dotted line, which is on a of the gas displaced bytheengine. It will be seen that as the air going through the pipe 11 isheated, it will consequently heat the gasoline in the carburetor, andcause a carbura-,

tion of the gasoline and insure a more thorough mixture with the air.

- Having thus described the invention, what is claimed as new is- 1. Acarburetor having an outlet pipe connecting with the upper portionthereof, and having the lower end reduced and provided with a series ofplates at dilferent levels and perforated at different points to causethe inflowingair to make a tortuous circuit, aninverted conical fenderdisposed above the series of plates, an oil inlet pipe attached to thelower portion of the carburetor, and an air inlet pipe communicatingwith the carburetor at the lowest point below the aforesaid series ofplates, substantially as set forth.

2. A carburetor having its lower end reduced, a series of platesdisposed at different levels in the lower end of the carburetor, andperforated at different points, inverted conical shaped fender arrangedabove the series of plates, a gage to determine the level of thehydrocarbon, and tube connecting the lower end of the reservoir with thelowest portion of the carburetor, an air inlet pipe communicating withthe lower end of the carburetor below the series of plates, a heater forraising the air to the required temperature prior to entering thecarburetor, and an outlet pipe communicating with the upper end of thesaid carburetor, substantially as set forth.

3. The herein shown and described carburetor, composed of a reservoirand carburetor heater for raising the temperatureof the air to theproper degree, and an outlet pipe communicating with the upper end ofthe carburetor, substantially as setforth.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

- JAMES O. SPRAGUE.

JOHN WV. GUTHRIE. Witnesses;

WILLIAM D. LAWTON, I. E. GORMAN.

